KLEISER KIRK E. made both purchases and sales at CATALYST BANCORP, INC.

Purchased 6.20K shares and sold 6K shares — review individual transaction dates and prices for directional context.

P · 3S · 2

KLEISER KIRK E.

Filed: 6/11/2026ACC: 0001885818-26-000002

InsiderKLEISER KIRK E.CIK 1885818

→

IssuerCATALYST BANCORP, INC.CIK 1849867

Director

Since Oct 2021

+1.26K

Net shares

Net buyer

$96.2K

Total sold

Open market trades

3B · 2S

Total transactions

7.26K acquired · 6K disposed

Non-Derivative Transactions6

Common Stock

Indirect

S · Sale

−5K

Price / share

$16.04

Trade value

$80.17K

% of position

New position

6/10/2026

5K→0.00

Common Stock

Indirect

S · Sale

−1K

Price / share

$16.04

Trade value

$16.04K

% of position

New position

6/10/2026

1K→0.00

Common Stock

Direct

A · Award

+1.06K

Price / share

—

Trade value

—

% of position

4.3%

6/10/2026

24.52K→25.58K

Common Stock

Direct

P · Purchase

+2.85K

Price / share

$16.13

Trade value

$45.98K

% of position

11.1%

6/10/2026

25.58K→28.43K

Common Stock

Indirect

P · Purchase

+2.35K

Price / share

$16.09

Trade value

$37.80K

% of position

13.2%

6/10/2026

17.75K→20.10K

Common Stock

Indirect

P · Purchase

+1K

Price / share

$16.11

Trade value

$16.11K

% of position

32.3%

6/10/2026

3.10K→4.10K

Total

Net shares

+1.26K

Net value

$3.68K

Security	Date	Type	Shares	Price / Share	Trade Value	% of Position	Held Before	Held After
Common Stock Indirect	6/10/2026	S · Sale	−5K	$16.04	$80.17K	New position	5K	0.00
Common Stock Indirect	6/10/2026	S · Sale	−1K	$16.04	$16.04K	New position	1K	0.00
Common Stock Direct	6/10/2026	A · Award	+1.06K	—	—	4.3%	24.52K	25.58K
Common Stock Direct	6/10/2026	P · Purchase	+2.85K	$16.13	$45.98K	11.1%	25.58K	28.43K
Common Stock Indirect	6/10/2026	P · Purchase	+2.35K	$16.09	$37.80K	13.2%	17.75K	20.10K
Common Stock Indirect	6/10/2026	P · Purchase	+1K	$16.11	$16.11K	32.3%	3.10K	4.10K
Total			+1.26K		$3.68K

Derivative Transactions0

No derivative transactions reported

Non-Derivative Holdings (Post-Transaction)1

Common Stock

Indirect

Shares owned900.00

Total

900.00 indirect900.00

Security Title	Shares Owned	Ownership Type
Common Stock	900.00	Indirect
Total	900.00	900.00 indirect

Derivative Holdings (Post-Transaction)3

Stock Option (Right to Buy)

Direct

Underlying security

Common Stock

Underlying shares

2.65K

Shares owned

2.65K

Exercise price

15.96

Expiration

—

Exercise window

—

Stock Option (Right to Buy)

Direct

Underlying security

Common Stock

Underlying shares

21.16K

Shares owned

21.16K

Exercise price

13.30

Expiration

—

Exercise window

—

Stock Option (Right to Buy)

Direct

Underlying security

Common Stock

Underlying shares

2.65K

Shares owned

2.65K

Exercise price

12.08

Expiration

—

Exercise window

—

Total

Underlying

26.45K

Owned

26.45K

Security	Underlying	Exercise Price	Exercise Window	Expiration	Underlying Shares	Shares Owned
Stock Option (Right to Buy) Direct	Common Stock	15.96	—	—	2.65K	2.65K
Stock Option (Right to Buy) Direct	Common Stock	13.30	—	—	21.16K	21.16K
Stock Option (Right to Buy) Direct	Common Stock	12.08	—	—	2.65K	2.65K
Total					26.45K	26.45K